unit fix

Author: nicklog

tests/Form/DataTransformer/ObjectToIdTransformerTest.php

@@ -111,7 +111,7 @@ public function testInvalidArray() : void
         $transformer = new ObjectToIdTransformer($registry, TestObject::class, 'name');
 
         $this->expectException(InvalidArgumentException::class);
-        $this->expectExceptionMessage('Expected an object. Got: array');
+        $this->expectExceptionMessage('Expected an instance of Shapecode\Bundle\HiddenEntityTypeBundle\Tests\Model\TestObject. Got: array');
 
         $transformer->transform([$object]);
     }

tests/Form/DataTransformer/ObjectsToIdTransformerTest.php

@@ -98,7 +98,7 @@ public function testInvalidArray() : void
         $transformer = new ObjectsToIdTransformer($registry, TestObject::class, 'name');
 
         $this->expectException(InvalidArgumentException::class);
-        $this->expectExceptionMessage('Expected an array. Got: Shapecode\Bundle\HiddenEntityTypeBundle\Tests\Model\TestFormModel');
+        $this->expectExceptionMessage('Expected an iterable. Got: Shapecode\Bundle\HiddenEntityTypeBundle\Tests\Model\TestFormModel');
 
         $transformer->transform($object);
     }